Why is the spare tire size different from the original tire?

[EmilianoDella]

The reasons why the spare tire size is different from the original tire are as follows: 1. Reduce vehicle weight: The overall weight of a full-size spare tire is the highest among the three types of tires. When the car is heavier, the body stability and handling will be affected. For some brands that position their cars as lightweight vehicles, the lighter the body weight, the better. Therefore, manufacturers will try every means to reduce the weight, so the heavier full-size spare tire is not within the selection range. 2. Remind the owner: The spare tire is slightly smaller than the normal tire. This is an unwritten international practice, especially for European and American cars, where most spare tires use smaller tires, and some are even marked with different colors. On one hand, this is to save space and reduce weight, but more importantly, it reminds the owner not to use the spare tire as a regular tire and to replace it with a normal tire as soon as possible.